Single and Double Slit Diffraction and Interference

  • Thread starter Pride
  • Start date
  • #1
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I have no idea where to start with these questions. Im pretty sure I have to use these equations
1. theta = tan^-1(x/D)
2. wsintheta = nlambda
3. dsintheta = nlambda

Which order m of in the two-slit interference pattern will give the least uncertainty in the slit spacing, d?
a) m = 1 b) m = 2 c) m = 3 d) largest m available e) smallest m available

For a two-slit interference pattern, if the width of each slit is made 20% smaller, what is the change in
the angle of the first interference maximum?
a) 40% decrease b) 20% increase c) 40% increase d) 20% decrease e) no change

For an illuminated pair of slits, if the spacing between the slits is made 20% smaller, what is the change
in the angle of the first diffraction minimum?
a) 40% decrease b) 20% increase c) 40% increase d) 20% decrease e) no change

Can anyone explain how I would do these?
Thanks!
 

Answers and Replies

  • #2
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Bump. Anyone have any idea how to start these?
 

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